About navidcity

navidcity · 2023-10-02

Hello all,I'm using STM32L552 MCU and its I2C peripheral to control a board. I'm facing a phenomenal which I not quite sure how to handle that. I have a pretty old fan controller chip on the board which is kind of really slow. Not only it works with ...

navidcity · 2023-07-07

First of all the board that we use is "NUCLEO-L552ZE". The upper section of the board is the ST-Link which we use to program and debug the chip. The ST-Link also forwards one of the UARTs (LPUART1) over USB. So we conveniently use this feature to tes...

navidcity · 2023-03-07

Hi,recently I changed my microcontroller from STM32L152 to STM32L552. In L1 I was using the code in the following link to activate the internal bootloader.https://community.st.com/s/question/0D50X00009XkeeWSAR/stm32l476rg-jump-to-bootloader-from-soft...

navidcity · 2023-01-16

I'm writing C++ code wih STM32CubeIDE. Version of IDE is 1.11.0 and it comes with arm-none-eabi-g++ version 10.3-2021.10 . The compiler has some of C++20 features and I'm using them in the code.The problem is some of them are not recognized by the ID...

navidcity · 2024-04-30

No, the fan controller is purely an I²C slave device. But by causing the glitch on the SCL line STM32 I²C peripheral thinks there is another master on the bus talking. So it goes into multi master mode. For now there is no other master on the bus. In...

navidcity · 2024-04-30

Thanks for the reply.The SCL isn't pulled low indefinitely by fan controller. It's only a voltage spike on the line which makes this problem. I attached two useful images. They are captured by a logic analyzer.

navidcity · 2023-05-25

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navidcity · 2023-03-07

Thanks for your reply.Actually bootloader in L5 is in another flash (system flash) so definitely we need to remap that to 0x0. But SYSCFG doesn't have the remap functionality anymore and I couldn't find any register responsible for that in datasheet ...

navidcity · 2023-03-07

Thanks for your reply.My question is not about software design. Suppose that I have that switch and after reset it's decided to start the bootloader. Now what is the process of starting internal (jumping into) bootloader in L5?The process that I've u...

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I2C peripheral Multi-master mode

Help to find why NUCLEO boards are getting burnt

How to jump into internal bootloader from software in STM32L552

C++20 syntax is not being supported by STM32CubeIDE

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Re: I2C peripheral Multi-master mode

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Re: How to jump into internal bootloader from software in STM32L552